source: mainline/kernel/generic/include/time/timeout.h@ c28413a9

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since c28413a9 was da1bafb, checked in by Martin Decky <martin@…>, 15 years ago

major code revision

  • replace spinlocks taken with interrupts disabled with irq_spinlocks
  • change spacing (not indendation) to be tab-size independent
  • use unsigned integer types where appropriate (especially bit flags)
  • visual separation
  • remove argument names in function prototypes
  • string changes
  • correct some formating directives
  • replace various cryptic single-character variables (t, a, m, c, b, etc.) with proper identifiers (thread, task, timeout, as, itm, itc, etc.)
  • unify some assembler constructs
  • unused page table levels are now optimized out in compile time
  • replace several ints (with boolean semantics) with bools
  • use specifically sized types instead of generic types where appropriate (size_t, uint32_t, btree_key_t)
  • improve comments
  • split asserts with conjuction into multiple independent asserts
  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2 * Copyright (c) 2001-2004 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup time
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_TIMEOUT_H_
36#define KERN_TIMEOUT_H_
37
38#include <typedefs.h>
39#include <adt/list.h>
40#include <cpu.h>
41
42typedef void (* timeout_handler_t)(void *arg);
43
44typedef struct {
45 IRQ_SPINLOCK_DECLARE(lock);
46
47 /** Link to the list of active timeouts on THE->cpu */
48 link_t link;
49 /** Timeout will be activated in this amount of clock() ticks. */
50 uint64_t ticks;
51 /** Function that will be called on timeout activation. */
52 timeout_handler_t handler;
53 /** Argument to be passed to handler() function. */
54 void *arg;
55 /** On which processor is this timeout registered. */
56 cpu_t *cpu;
57} timeout_t;
58
59#define us2ticks(us) ((uint64_t) (((uint32_t) (us) / (1000000 / HZ))))
60
61extern void timeout_init(void);
62extern void timeout_initialize(timeout_t *);
63extern void timeout_reinitialize(timeout_t *);
64extern void timeout_register(timeout_t *, uint64_t, timeout_handler_t, void *);
65extern bool timeout_unregister(timeout_t *);
66
67#endif
68
69/** @}
70 */
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